Improved mode of pubifung and deodobizikg oils



igniteh gtategl. gau t DEXTER SYMONDS, or LOWELL, MASSACHUSETTS; A-SSIGNOR T0 HIM- SELF, BENJAMIN- WOODWARDLAND s. MARSHAL.

letters Patent No, 65,137,1Zated ZlIay 28, 1861.

flit: Stgrnun nfrmh lain llJtSt Enters fiiihnt ant making out of tlge sums.

. TO ALL WHOM IT MAY CONCERN: I

Be it known that I, DEXTER SYMONDS, of Lowell, in the county of Middlesex, and ,State of Massachusetts, have invented a new and useful improvement in the Art, Process, or Method of Deodorizing and Purifying Hydrocarbon or other Oils and I hereby declare that the following is a full, clear, the saidart, process, or method, and of the substance or material used for deodoriz'in This invention consists in a. simple, cheap, and eillcient method, iying any oil which has an unpleasant odor, and in the use or employ material for such purpose where heat is applied. A

The operation of deodorizing and purifying oil by my improved process is as follows: The crude oil, or the oil to be deodorized or purified, is placed inastill mo gallons, of such oil, I add about ten gallons'of strong lime-water, in about the proportion of one peek of lime iuightgallons of water-,aecording to'the strength of the lime; and I sometimes use'chloride' of time 'io'r the same purpose. Aftertlie oil to be operated upon and the lime-water are put into the still, heat'is applied thereto in any convenient manner. This heat is continued until the oil ai1d'lime wa.terhave been sufliciently and exact description of ond purifying such oils. process, or art, of 'deodorizing and puriment of a simple and cheap substance or a itnted b boilin to brin all the articles of oil into contact with-the lime-water. which acts as a dising i y g g P fectant or neutralizing agent, to neutralize or expel the unpleasant odors from the oil. Before the oil and limewater in the still have reached a boiling point, the lighter portion of such oil begins to pass off, and continues to pass off during the boiling operation. This light oil, in its passage from the still to the condenser, in a state of vapor, passes through water strongly impregnated with lime or chloride of lime. By this process of passing thelight oil through the'lime-water in its passage from the still to condenser, said light oil is sufliciently deprived of its unpleasant odor, which odor could notbeextracted in the still without a second distillation; but the heavy oil is sufficiently deodoriied in the still, as it does not pass oft in vapor, but remains in the stilllong enough-tojbe acted upon by the lime-water.therein.

If the oil operated upon is to be used for heating purposes, all the products of the operation may be mixed together; and if said oil is to he used for lighting purposes, the first product'of distillation is kept separate, and not mixed with the heavy oil, as such light oil is too inflammable to be used with safety.

Having fully described my invention, the process,..and substance or material used, what I claim as new, and desire to secure by Letters Patent, isi In deodoriiing and purifying hydrocarbon or other oils, 1 claim the use of the substances .or materials herein specified and in the manner set forth. A

DEXTER srluonns.

Witnesses;

JQHN E. Gama, J. Br'SAMusLsr de for that purpose, and to a. quantity, say thirty' 

